We installed a plugin to show our site offline for a few days during an update. But after finishing the update we cant remove the "Site offline" message. Finally we uninstalled the plugin, but the frontpage still shows "Site offline". Any suggestions om how to get the site "online" again? ( no, plugin developer does not answer our emails..)

Or at least the url to the live site
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Tom J Nowell♦Apr 23 '12 at 14:10

No one can really help unless you post a URL.
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markratledgeApr 23 '12 at 15:10

We definitely need to know Exactly what "Maintenance Mode" Plugin you used, either with a link to the Plugin's listing in the WPORG Plugin Repository, or a link to where you downloaded the Plugin.
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Chip BennettApr 23 '12 at 15:47

I could be that the plugin added some wired thing as DB-option that gets autoloaded. Please check your DB-Options table for unknown keys/values. Then do cross file searches inside the plugins folder for the key.